"I really don't think this has anything to do with 'Days of Future Past' or its timeline," he explained. "If it were Deadpool, he could tell 'Days of Future Past' to take its timeline and go fuck itself. We make fun of the timelines in the movie, but Deadpool is not affected by that at all. Deadpool, I think, is just his own thing -- his own universe -- and anytime the other X-Men interact with Deadpool and his universe, they do so at their own risk and peril."

However, he isn't opposed to Deadpool exploring the larger X-Men Cinematic Universe. "There's so much material to mine in just the X-Men universe," he said. "In the future, if we're doing a bunch more 'Deadpool' movies, we're really going to explore the X-Men a lot. We'll see. And maybe X-Force -- X-Force is my priority. I really want to get that in."

As to the film at hand, he revealed how grounded it really was. "You can't just have Deadpool go completely insane for the whole movie. You have to understand who he is. You have to have some grounded moments to sort of anchor it in, and the love story is really important in our film and there's a full legit love story in the movie. That love story turns into a revenge story, and that's one element of Deadpool. He feels everything so deeply... he would do anything to get this girl back. Deadpool is an interesting character to see when his back is against the wall. He'll do anything. When Deadpool is desperate, weird stuff happens."

He also weighed in on the film's R-rating and why it was crucial to the comedy. "The rated R thing is great," he shared. "We designed it that way, we wanted it that way. I don't think you wanted your movie to be rated R if it's not funny, but our movie is really funny and it's designed to be funny and it's as much an action movie as it is a comedy. In order to be really funny, you have to have no limits, and we needed no limits, and we had no limits. We really got to do whatever we wanted, however we wanted. The action is a lot more hardcore than you would see in a typical Marvel movie, and the comedy is a lot more hardcore than you'd see in anything, including normal comedies."